Pearl's two year old son sam is lagging behind his peers in daycare, so she took him to a psychologist to test his motor skills, adaptive behavior, personal-social skills, and use of language. this will produce a(n) that compares sam's performance to the norm for his age group.

I believe the answer is: Developmental quotient

Developmental quotient is a numerical measurement for children's psychological development as they grow older. As basis for measurements, it used  language, perceptual skills, motors skills, independence, and social initiative as important factors for consideration.